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util/tests: add set bit range test

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This simple test validates that it is possible to set bits
across word bounary.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11321>
This commit is contained in:
Christian Gmeiner 2021-05-12 19:47:14 +02:00 • committed by Marge Bot
parent b3b03e33c9
commit 54ea23da51
1 changed files with 20 additions and 0 deletions
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20
src/util/bitset_test.cpp
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@ -381,3 +381,23 @@ TEST(bitset, test_shl_two_words)
EXPECT_EQ(BITSET_TEST_RANGE(r, 0, 31), false);
EXPECT_EQ(BITSET_TEST_RANGE(r, 32, 63), true);
}
TEST(bitset, test_setrange_across_word_boundary)
{
BITSET_DECLARE(r, 128);
BITSET_ZERO(r);
BITSET_SET_RANGE(r, 62, 65);
EXPECT_EQ(BITSET_TEST_RANGE(r, 0, 31), false);
EXPECT_EQ(BITSET_TEST_RANGE(r, 32, 63), true);
EXPECT_EQ(BITSET_TEST_RANGE(r, 64, 95), true);
EXPECT_EQ(BITSET_TEST_RANGE(r, 96, 127), false);
EXPECT_EQ(BITSET_TEST(r, 61), false);
for (int i = 62; i <= 65; i++)
EXPECT_EQ(BITSET_TEST(r, i), true);
EXPECT_EQ(BITSET_TEST(r, 66), false);
}